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Ординатура / Офтальмология / Английские материалы / Retinal and Choroidal Manifestations of Selected Systemic Diseases_Arevalo_2012.pdf
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Posterior Pole Manifestations

3

of Cysticercosis

Valentina Franco-Cardenas, Naresh Mandava,

and Hugo Quiroz-Mercado

Abstract

Cysticercosis is an infestation that results from the ingestion of eggs of Taenia solium. Eggs are found in fecally contaminated water or food. Autoinfection as a result of the entry of eggs into stomach due to retroperistalsis or accidental ingestion of eggs is possible. The larval stage of T. solium (cysticercus) locates in tissues with high blood requirement, such as the central nervous system (CNS), muscle, or eye. Ocular cysticerci may be located in any part of the eye. For diagnostic purposes, B-ultrasonography should be selected first. Cysticerci induce severe inflammation due to toxins contained inside the cyst. Surgical removal is the treatment of choice.

Keywords

Ocular cysticercosis • Cysticerci • Vitrectomy • Tape worm infestation • Taenia solium • Taeniasis • Autoinfection

V. Franco-Cardenas, M.D. ( )

Asociación para Evitar la Ceguera en México, Hospital “Dr. Luis Sánchez Bulnes”, Coyoacan, México, México

Department of Ophthalmology, Jules Stein Eye Institute, David Geffen School of Medicine at University of California Los Angeles (UCLA), 100 Stein Plaza, Retina Suite, Los Angeles, CA 90095, USA

e-mail: valentinafranco@hotmail.com

N. Mandava, M.D.

Department of Ophthalmology, University of Colorado Denver, 12605 East 16th Avenue, Aurora,

CO 80045, USA

e-mail: naresh.mandava@ucdenver.edu

H. Quiroz-Mercado, M.D.

Department of Ophthalmology, Denver Health Medical Center, Rocky Mountain Lions Eye Institute, University of Colorado, 777 Bannock Street, MC 0188,

Denver, CO 80204, USA

e-mail: hugo.quiroz-mercado@dhha.org

Introduction

Taeniasis is caused by infestation with the adult worm of Taenia solium in the human gastrointestinal tract. Taeniasis is found worldwide but is endemic in some parts of the world. While taeniasis is rarely seen in those who do not eat pork, cysticercosis occurs in all ethnic groups regardless of dietary habits.

Cysticercosis refers to an infestation by the larva form of Taenia solium. The pig is the usual intermediate host, but dogs, cats, and sheep can harbor the larvae as well. When embryonated T. solium eggs enter the human intestinal tract by ingestion of contaminated water or food, the hatched larvae are able to

J.F. Arévalo (ed.), Retinal and Choroidal Manifestations of Selected Systemic Diseases,

37

DOI 10.1007/978-1-4614-3646-1_3, © Springer Science+Business Media New York 2013